package org.xqh.study.juc.suspend;

/**
 * Created by leo on 2017/9/15.
 */
public class GoodSuspend {

    public static Object u=new Object();

    public static class ChangeObjectThread extends Thread{

        volatile boolean suspendme=false;

        public void suspendMe(){
            suspendme=true;
        }

        public void resumeMe(){
            suspendme=false;

            synchronized (this){
                notify();
            }
        }

        @Override
        public void run() {
            while (true){
                synchronized (this){
                    while (suspendme){
                        try {
                            wait();
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }
                    }
                }

                synchronized (u){
                    System.out.println("in ChangeObjectThread...");
                }
                Thread.yield();
            }
        }
    }

    public static class ReadObjectThread extends Thread{
        @Override
        public void run() {
            while (true){
                synchronized (u){
                    System.out.println("in ReadObjectThread...");
                }
                Thread.yield();
            }
        }
    }

    public static void main(String[] args) throws InterruptedException {
        ChangeObjectThread t1=new ChangeObjectThread();
        ReadObjectThread t2=new ReadObjectThread();
        t1.start();
        t2.start();
        Thread.sleep(1000);
        t1.suspendMe();
        System.out.println("suspend t1 2 sec...");
        Thread.sleep(2000);
        System.out.println("resume t1...");
        t1.resumeMe();
    }
}
